Trailer truck and boom therefor



Oct. 12, 1-943. MQSLING 2,3315713" TRAILER TRUCK AND Boou THEREFOR v Filed-Feb. 17, 1942 s Sheets-Sheet 1 Oct. 12, 1943. s. A. MOSLING TRAILER TRUCK AND BOOM THEBEFOR- mea m. 17, 1942 s snmwnm 2 Ocf. 12, 1943. B. A. MOSLING 2,331,713

TRAILER TRUCK ANDROOM THEREFOR Filed Feb.- 1'7, 1942 3 Shana-Sheet 5 Patented Oct. 12, 1943 UNITED STATES rare-NT omega TRAILER TRUCK AND BOOM THEREFOR Bernhard A. Mosling, Oshkosh, Wis. h p I Application February 17,1942,SerialNor43L3|i9 f v 1 9 Claims. (Cl.t2l4-86) I I My invention relates to trailer trucks, that is,

trucks adapted to be connected to trailers for the hauling of the latter-, and booms for such trailer trucks. Though not so restricted, my invention is particularly applicable for military use and to the transportation of heavy ordance, and the screw and ammunition therefor, or for the hauling of tanks, ordance, or like apparatus; In this connection, reference is had to my copending applications, Ser. No. 344,797yfiled July 10, 1940; and Ser. No. 389,996, filed April 23, 1941, now Patent No. 2,312,769, granted March 2, 1943, which disclose, among otherfeatures, a boom or gooseneck carried by the tractor and which is' rigidly connectable to a trailer. I

With the foregoing in view, an object of my invention is to provide a novel combination of tractor or truck and a boom therefor.

A further object is to providea novel trailer truck for ordnance which includes space for personnel and ammunition as well as means for coupling the truck to a trailer;

A further object is to provide in a boom for a trailer truck or tractor which is universally connected to the tractor for operation as a boom,

- means for locking said boom in an elevated position to transform the same into a rigid davitlike mast for hoisting heavy'loads clear of the ground.

A further object is toprovide with a device such as that last described of ground engaging means for bracing the tractor against overturnmg.

A still further object is'to provide a novel boom or gooseneck for a tractor or for a trailer truck.

Other objects and advantages reside in the particular structure of my invention, combination and arrangement of the several parts, and in the particular mode of operation-as will be read-,-

ily apparent to those skilled in the art upon reference to the drawings in connection with the specification, wherein the invention is shown described and claimed. 7

In the drawings: 7 Fig. 1 is a plan view of the invention showing the same coupled to a trailer, the trailer bein only partially shown;

Fig. 2 is an elevation of Fig. 1;

and

Fig. 4 is a rear elevation of the invention, ShQW- Fig. 3 is a fragmentary enlargement of Fig. 2;

wheels i2, a cab l3 having front and rear seats M and I5 for personnel and a'truck or com-.- pai'tmeiit 16 for ammunition, tools, supplies, or the like Rearwardly. of the trunk Iii there is provideda drum I! for a topping 1ift'c'able-|8 of a boom or goo'seneck |9. Theboom'lt comprises a" front end'Zo (Fig. 3), universally connec'ted at 28' through the medium of the ball and socket joint 28', an intermediate hump 2| and a rear end ZZ-Which is adapted to be secured to'a trailer H in the manner' disclosedj in my co pending application aforesaid, "Ser.-N-o.

389,996, filed April 23, 1941. Such connection,"

briefly, includes a bar 38' suitably earried'by the rear end 22 of the boom which is engaged; by the swingable clamp members t1 carried bythe trailer beam tfi. The front portion of the beam is Provided with the cable fjsheave so around which the cable runs to be secure'd'to the pin '34j U-beamsZS' serveto' connect the front portion of the'bear'n 36 to the boom through the medium of a U-shaped member (not shown) as clearly shown and described in the aforementioned case.

Thehump 2| mounts a shea've 23in suitable bearings and the tip of the rear endZZ ofthe boom mounts a secondsheave 24 in suitable bear- The cablelB. passes over thesheaves 23, 24;and a hook 2% on the free end of the cable may be hooked to. anfleye 25 on the underside of the rear end 2201 the boom. A block 21' which may include a hook 28 may be mounted on the bight of the cable intermediate'the' 'hook 28 and the rear sheave 24.

An opening 29 is formed through the upper surface of the hump 2| of the'bo'om just rearwardlyof sheave 23 and the shaft for the sheave 23 swing-ably mounts a bail 353. 1 An eye 3| is'proj vided on the uppersurface of thehump 2| at a any suitable point and is adapted to receivethe hook 33 of a second-cable 32 which extends through the hole 29 in the top of the hump and outwardly of the boom end 22 through an opening (not shown) in the bottom thereofgA" hook 34" on this end: ofthec'able may be secured to aneye 34 which may be located at any suit-J able under-surface point of the boo m adjacent 1 the boom end 22. The purpose ofthe details just described willappear later.

The front end 29 of the boom is universally connected to the truck or tractor in the same manner as i in my co-pending applications afore said. However,

connected to the underside-of the front end 20 in addition, I have provided suitable guy or brace means 35 having itsju'pper end of the boom as at 38 and its lower, end connected to the tractor body as at 31 whereby to provide means for limiting the elevating movement of the boom. The member 36 is preferably a flexible cable of suitable strength but obviously may be a rigid bar having a sliding connection with one or both of the boom and tractor to permit lowering of the boom.

To brace the boom I9 against lateral swaying when the tractor is operating without-the trailer, there is provided a suitable brace member generally indicated in Fig. 3 by 39. This member 39 is generally of inverted U-sha-pe (Fig. i)

and comprises a cross bar 40 which extends transversely through the boom 19 and is journalled therein for swinging movement on a horizontal axis with the ends extending outwardly of the side of the boom. Parallel legs 4|. depend from the ends or the bar 40 and are rigidly connected thereto in any suitable manner. legs ll, are telescopically received in; swingably mounted tubular leg extensions 42 whereby the legsmay beextended from the solid line position of Fig. 2 to the broken line positions. The legs of1the brace 39 may be locked in either the extended orclosedpositions by any suitable means suchas the holes 94, ,45 in the lower and upper ends of the legs, and the pins 43 of the leg extensions 42 v 5 a When the boom is connected to. a trailer, obviously the brace 39 cannot be used asthere must beauniversal connection to permit sharp turns to be made. Inthis event the brace 39 is collapsed and swung to the broken line position of Fig. 3, where it issecured to the underside of the boom 19 by any suitable means such as the clamp 46. However. .whenjit is used to'brace the boom, the brace 39 is swung to the full line position t; Fig-3 either in 'the collapsed or extendedpformand the laterallyeand outwardly directed lower ends 41 or the leg extension 42 are clamped ,to the tractor body by any suitable means such as the clamps 48. Thus, when the tractor is proceeding without a trailer the brace 39. will be in the solid line position of Fig. 3, but will be collapsed instead 'of being extended. It frequentlyoccurs, especially in'militaryservice, that it, isdesirableto transform 'the boom 39 into an elevated and rigid mast, whereby disabled vehicles or the like, may behoisted a considerable; height from the ground. In thi instance, the boom is elevated to its maximum height and the legs of'the'brace 39are extended and secured. Then the cable I8 may be slacked and used as a hoisting-cable or to pull a disabled vehicle out of the mud. i

When the tractor is'so used, the cable I8 is disconnected from the eye 25, and instead, is hooked in the bail adjacent the sheave to facilitate the raising of the boom.

When the boom is to be coupled to a. trailer for hauling the latter, the book 26 on the free end of the cable I8 is hooked in the hook 33 of the second cable 32, the lower end of the cable 32 is connected to the trailer and the hitch accomplished in the same manner as that disclosed by my co-pending application aforesaid, Ser. No. 389,996, filed April 23, 1941. By providing a secdndcable 32, the operators need lose no tim in threading the cable l8 through the boom l9.

To prevent the tractor ID from being pulled over backwards when hoisting a heavy load with the brace 39 extended, suitable telescopic braces are provided at the rear of the tractor. Such braces 59 are pivotally secured to the tractor as The at 5| and when not in use may be collapsed, swung upwardly out of the way and be secured in any suitable manner (not shown).

Safety cross chains are shown at 52 in Fig. 4. These chains prevent the boom from traveling to either side when the boom is not attached to the supporting members 42 and are suitably connected to fasteners on the tractor body and the boom. These chains may be readily uncoupled when necessary and do not serve to limit the upwardtravel of the boom.

While I have shown and described what is now thought to be the preferred embodiment of my invention, it is to be understood that the same is susceptible to other forms and expressions without departing from the spirit of the invention and the scope of the subjoined claims.

I claimz. V

1. Acombined hoisting and towing boom for a tractor, comprising an elongated beam-like member, means'universally connecting one end of said boom to said tractor, tractor carried means -forraising and lowering said boom, a brace member carried by said boom, said member being movable into and out of an operative position, means detachably connecting said brace member to said tractor when said member is in the operative position to rigidly support said boom, and said brace member being extensible whereby said boom may be rigidly supported at a plurality of selected heights.

2. A combined hoisting and towing boom for a tractor comprising an elongated beam-like member, means for universally connecting one end of said boom to said tractor, tractor carried means for raising and lowering said boom, tractor-carried means for bracking said boom against lateral swaying when in raised position, and means forycollapsing said bracing means against the boom; s

3. The structure of claim 2, said bracing means comprising a U-shaped member pivoted to the boom and tubularleg receiving extensions pivoted ,to the tractor body,

4.; A combined hoisting and towing boom for a tractor comprising an elongated beam-like member,;;means -for.unlversal ly connecting one end of said boomto said tractor, tractor carried means for raising and lowering said boom. tractor-carried means for bracing said boom against lateral swaying when in raised position, said means being vertically adjustable and pivotally connected to said boom and to the tractor body. 5. The structure of claim 4, and means Where" by said bracing means is collapsible against the boom.

6. The structure of claim l, said bracing means comprising a U-shaped member telescopically received in leg extensions carried by the tractor body.

'7. A combined hoisting and towing boom for a tractor comprising an elongated beam-like member, means for universally connecting one end of said boom to said tractor,'a tractor-corried substantially U-shapecl bracing member pivoted to said boom to prevent said boom from swaying laterally, means pivotally carried by the tractor body to receive the legs of said U-shzped member; and means for adjusting said bracing means vertically.

8. The structure of claim 2 and auxiliary bracing members carried by the tractor body for engaging the ground when said boom is in raised position.

9. A boom for a tractor comprisin an elongated member, means for universally connecting one end of said boom to said tractor, a substantially U-shaped bracing member pivoted to said boom to prevent said boom from swaying lattically, and means for uncoupling the brace memher from the tractor body to permit the bracing means to be collapsed against the boom, and means carried by said boom to hold said bracing erally, means pivotally carried by the tractor 5 means in collapsed form.

body to receive the legs of said U-shaped member, means for adjusting said bracing means ver- BERNHARD A. MOSLING. 

